<template>
  <div class="rank" >
    <scroll :data='topList' class="toplist" >
      <ul>
        <li 
          class="item" 
          v-for="(item,index) of topList"
          :key="index"
          @click="selectItem(item)"
        >
          <div class="icon">
            <img width="100" height="100" v-lazy='item.picUrl'/>
          </div>
          <ul class="songlist">
            <li
              class="song"
              v-for="(item,index) of item.songList"
              :key='index'
            >
              <span>{{index+1}}</span>
              <span>{{item.singername}}-{{item.songname}}</span>
            </li>
          </ul>
        </li>
      </ul>    
      <div class="loading-container" v-if="!this.topList.length">
        <loading></loading>
      </div>
    </scroll>
    <router-view></router-view>
  </div>
</template>

<script type="text/ecmascript-6">
import {getToplist} from 'api/rank'
import {ERR_OK} from 'api/config'
import Scroll from 'base/scroll/scroll'
import Loading from 'base/loading/loading'
import {mapMutations} from 'vuex'
  export default {
    components: {
      Scroll,
      Loading
    },
    data() {
      return {
        topList: []
      }
    },
    methods: {
      //获取接口数据
      _getToplist() {
        getToplist().then(res=>{
          if(res.code===ERR_OK) {
            // console.log(res.data)
            this.topList=res.data.topList
          }
        })
      },
      //点击进入排行棒页面
      selectItem(item) {
        this.$router.push({
          path: `/rank/${item.id}`
        }),
        this.setToplist(item)
      },
      ...mapMutations({
        setToplist:'SET_TOP_LIST'
      })
    },
    created() {
      setTimeout(() => {
        this._getToplist()
      }, 500);
    }
  }
</script>

<style scoped lang="stylus" rel="stylesheet/stylus">
  @import "~common/stylus/variable"
  @import "~common/stylus/mixin"

  .rank
    position: fixed
    width: 100%
    top: 88px
    bottom: 0
    .toplist
      height: 100%
      overflow: hidden
      .item
        display: flex
        margin: 0 20px
        padding-top: 20px
        height: 100px
        &:last-child
          padding-bottom: 20px
        .icon
          flex: 0 0 100px
          width: 100px
          height: 100px
        .songlist
          flex: 1
          display: flex
          flex-direction: column
          justify-content: center
          padding: 0 20px
          height: 100px
          overflow: hidden
          background: $color-highlight-background
          color: $color-text-d
          font-size: $font-size-small
          .song
            no-wrap()
            line-height: 26px
      .loading-container
        position: absolute
        width: 100%
        top: 50%
        transform: translateY(-50%)
</style>